Wiktionary
lifegiving
a. Describing that which causes or preserves life, often for that which is essential to survival. alt. Describing that which causes or preserves life, often for that which is essential to survival.
Wikipedia
Usage examples of "lifegiving".
Already their clothes had begun to dry, and lifegiving heat once again seeped into their flesh and bones.
But if you were to give that desert-dry, that pilgrim-weary, that devout, humble, and decrepit old soul a long, soothing, refreshing, and stimulating draught of lifegiving fluid, daughter of the vine, I would find it in my heart to pray for you for that deed of loving-kindness, of encompassing charity.